Reversing-gearing.



E. M. WHEELOGK. RBVBRSING Gamma.

APPLIUATION FILED JUNEQ, 1911.

1 ,O2 1,029, PatentedMar. 26, 1912.

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Patented Mar.26,1912.

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EDWIN M. WHEELOCK, 0F WINONA, MINNESOTA.

REVERSING-GEARING.

Specification of Letters Patent.

Application filed June 9, 1911.

Patented Mar. 26, 1912.

serial No. 632,275.

To all whom 'it may concern:

Be it known that I, EDWIN M. Wi-IEELOGK, a citizen of'the United States,residing at Winona, in the county of Winona and State of Minnesota, haveinvented certain new and useful Improvements in Reversing- Gearing forTraction-Engines, of which the following is a specication.

My invention relates to change speed and reversing gearing for tractionengines.

It is the object of my invention to provide a change speed gearingcapable of transmitting low, high, and intermediate speeds and areversing gear adapted to coperate only with one of said change speedgears and having means such that it will be impossible to throw thereversing gear into operation when the gearing is operative to transmitdirect movement to the operative shaft.`

The full objects and advantages of my invention will appear inconnection with the detailed description thereof and are particularlypointed out in the claims.

In the drawings illustrating the application of my invention in oneform,--Figure 1 is a plan view. Fig. 2 is an end elevation partly insection viewed toward the right 1n Fig. 1. Fig. 3 is a side elevation InFig. 1 the reversing gear is shown inoperative while in Figs. 2 and 3 itis shown in operative position. Journaled in boxes 4 and 5 upon framemembers 6 and 7 is a square shaft 8 having thereon a sleeve 9 providedwith a series of gears 10, 11 and 12, spaced apart sufliciently topermit the desired operation of reversing gear mechanism hereinafterdescribed, the intermediate of said gears 12 being the smaller for thepurpose of coperation with said reversing gear. The sleeve 9 is freelyslidable upon the shaft 8 being controlled by a fork 13 operating in acollar 14 on the sleeve 9, said fork being at the end of one arm 15 of alever pivoted at 16 to a frame member 17, the other arm 18 of said leverbeing pivotally connected at 19 with a link 20 which in turn isconnected with a hand operative change speed lever, not shown. A shaft21 is journaled in bearings carried by frame members 6 and 7 and saidshaft has thereon a series of different sized gears 22, 23 and 24adapted to cooperate with the gears 10, 11 and 12, respectively. One endof the shaft 21 carries a driving pinion 25 coperating with main drivegear 26 on a traction wheel, not shown, while the other end of shaft 21has loose thereon a sleeve 27 having a driving pinion 28 coperating withthe drive gear 29 on the other traction wheel, not shown, the sleeve 27being connected with the shaft 21 by means of differential gearing 30 ofwell known construction. The square shaft 8 has thereon a large gear 31coperating with a gear 32 mounted on a short shaft 33 in bearings 34 and35 on frame member 6 and a supplemental frame member 36, respectively,said gear 32 coperating with a gear on the engine shaft, not shown.

To a transverse frame member 37 is secured a bracket 38 having two ears39 and 40, respectively, in which is journaled the pivot pin 41 providedwith two arms 42 and 43. In the arms 42 and 43 is journaled a shaft 44,said shaft having loose thereon between the arms 42 and 43 an idler gear45. The shaft 44 extends to either side of t-he arms 42 and 43 and hasloose thereon sleeves 46 and 47 carrying disks 48 and 49, respectively,said sleeves being held upon the shaft 44 by means of pins 50 and 51.Between arm 42 and sleeve 47 a link 52 is pivotally connected to shaft44, said link being connected with a hand operative lever by means ofwhich the idler reversing gear 45 is swung into and out of operativeposition. The gear 45 is adapted to coperate at the same time with thecentral gear 12 on the sleeve 9 and the outside gear 23 on the shaft 21,operating when in this position to drive shaft 21 in reverse directionat reduced speed. The disks 48 and 49 on the shaft 44 are so positionedas to drop between outside gears 10 `and 11 on sleeve 9 when gear 12 ispositioned opposite gear 23, in which position owing to the spacingbetween gear 12 and gears 10 and 11 direct driving connection betweensquare shaft 8 and shaft 21 will be broken. In this relative position ofthe gears on sleeve 9 and shaft 21, respectively, it will be possible toswing the reversing gear 45 into the position shown in Figs. 2 and 3 tocomplete reversing connection. Should, however, the sleefe 9 bepositioned to either' side of the above indicated position so thateither gears 12 and 24 or 10 and 22 have direct driving connection,then, if an attempt is made to throw in the reversing gear, disk 49would engage gear 11 or disk 48 would engage gear 10 and prevent re- 110versing gear 45 reaching connecting position and the consequent breakageWhich in such a situation would inevitably result.

My reversing and change speed gearing is simple and compact, veryefficient for the purpose intended and provides ample protection frominjury Which might result from improperly connecting the reversing gearwhen the gears are connected for direct driving action, by renderingabsolutely impossible sueh double connection.

I claim: n,

l. In a traction engine, a driven shaft, a sleeve slidable on saidshaft, a 'plurality of gears on said sleeve spaced one from the other, acountershaft, a grouped series of gears on said counter shaft eachadapted to cooperate with one of said gears on the sleeve, an idler gearmovable into position to mesh simultaneously With a gear'on said sleeveand a gear on said countershaft to effect reverse movement of theeountershaft, and means movable with the idler gear to cooperate Withthe other gears on the sleeve to prevent said idler gear engaging saidgears on the sleeve and on the eountershaft'yvhen any of said gears arein mesh for direct driving action.

2. In a traction engine, a driven shaft square in cross section, asleeve fitting said square shaft and slidable thereon, three differentsized gears on said shaft, the intermediate gear being the smallest, acountershaft, three correspondingly different-sized gears on saidoountershaft grouped in ref verse order and each adapted to coperateCopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Wit-h a gear on said sleeve, an idler gear pivoted to a frame memberopposite an outside gear of t-he group on said shaft, means to swingsaid idler gear into position to mesh simultaneously With said outsidegear and said small-est gear on the sleeve, and means movable With saidpivoted gear to engage one or the other of the larger gears on thesleeve and prevent reversing engagement of said idler With said outsidegear and said smallest gear when either of said larger gears is in meshWith a gear on the shaft.

3. In a traction engine, a driven shaft, a sleeve slidable on saidshaft, three differentsized gears spaced apart on the sleeve theintermediate gear being the smallest, a eountershaft, a grouped seriesof gears on the eountershaft, a pair of pivoted arms, a shaftcarried bysaid arms, a gear on said shaft between the arms in the plane of a gearon the countershaft, disks on t-heshaft outside of said arms, and meansto swing the arms to bring the gear therebetween simultaneously intomesh with said opposite gear and said smallest gear on the sleeve, thedisks operating to engage a gear on the shaft and prevent suchsimultaneous meshing When the gears on the sleeve and shaft areconnected for direct driving action.

In testimony whereof I afiX my signature in presence of two Witnesses.

EDVIN M. WI-IEELOCK.

Witnesses H. A. BoWMAN, F. A. WHITELEY.

Washington, D. G.

